Weighing-scale



2 Sheets-Sheet 1.

(No Model.)

M. G. COOK.

' WEIGHING SCALE.

No. 349,570. Patented Sept. 21, 1886.

N, PETERS. PhuXn-Lvflmgraphon Wnhvngton, u. C.

UNITED STATES PATENT OFFICE.

MOSES G. COOK, OF ASHFIELD, i)IASSAOHUSE'llllb.

WEIGHING-SCALE.

SPECIFICATION forming part of Letters Patent No. 349,570, dated September 21, 1886.

Application filed March 29, 1986. Serial No. 106,944. (No model.)

2'0 all whom it may concern-.- edges which constitute the fulcrum for the Be it known that I, Moses G. Coon, of beam If. Ashiicld, county of Franklin, and State of Theknife-edges referred to are herein shown 5 Massachusetts, have invented an Iinproveas inserted in slots in a block, 0, and firmly 5 ment in Scales, of which the following desecured therein by screws 0.

scription, in connection with the accompany- The beam Z) is extended through and. sup ing drawings, is a specification, like letters ported by the block 0, said beam having one on the drawings representing like parts. of its arms, as d, threaded, to be engaged by 60 Thisinvention has for its objectthe produc threads on the inner surface of a sleeve, (1, tion of a scale by which small articles can be said sleeve being capable of movement over quickly and accurately weighed. the threaded arm (2, and being of sufficient My improved scale is especially adapted to weight to counterbalance the weight of a pan, be used by druggists and jewelers when it is (1 supported by a frame, (1, suspended from 6 5 desired to make a iine and rapid weighing; knife-edges d", secured to the beam 1) at or and it consists, essentially, of the scale-beam near its end, as shown in Fig. 1.

having one of its arms threaded and provided The block 0 is herein shown as recessed, to with a slot, a threaded sleeve mounted on said receive a barrel, 0, containing a coiled spring, arm, a dial, a co-operating pointer, and a sup- 0, one end of said spring being fastened, as at 70 port for said pointer, combined with means, e, to said barrel, the other end of the spring 30 independent ol'the threaded arm and traveling being secured, as at e, to a hub, c, a stud, c, in the slot, to connect said sleeve and support, on said hub being adapted to enter and be whereby changes of position of said sleeve rotated in a socket in the block 0, as shown in with relation to the threaded arm may be in- Fig. 4. 75 dicated on the dial to register variations in The block 0 supports a dial-case, f, containweight. ing a dial, f, provided with graduations, said My invention also consists, in combination dial beinghereinshown asgraduatedto grains, with the scale-beam, of a lever provided with there being two hundred and forty grains, or studs or projections, one above and the other one-half ounce, (indicated by thcdial shown in 80 below said beam, and with means, substan- Fig. 2,) the dial-case f being fastened to the tially as will be described, to turn said lever block 0 by screws/' (Shown in Figs. 3, 4, on its pivot to remove said studs or projecand 5.) The stud g on the hub c extended tions from contact with said beam, and with through the dial-case f and dial f, and has means, substantially as will be described, to mounted upon it a pointer, g. (See Fig. 2.) 85 cause said studs to engage said beam and The hub c has wound around ita chain, 71 which bring it to rest after each trial balance. isi'astened at oneend to said hub,and hasits oth- My invention further consists in details of er end attached to a slide-bar, it, cut away so construction, to be pointed out in the claims as to fit the sleeve d, as shown in Fig. 5, said at the end of this specification. chain and bar h" being adapted to move lon- 90 Figure l is a side elevation of a scale congitudinallyin a slot, 71 (see Fig. 1,) in the arm 40 structed in accordance with my invention; (1 ol the beam Z when the sleeve d is rotated.

Fig. 2, a plan view of Fig. 1.; Fig. 3, a partial The sleeve (1 will normally be in such positop view of Fig. 1,wit-h the dial-case removed; tion on the arm d that the pointer y will be Fig. 4., a section of Fig. 8 on line for; and Fig. at zero on the dial. 95 5, a section on line :0 m, Fig. 4, it being made XVhen it is desired to ascertain the weight chiefly to show the connection between the of any article or substance, the said article or sleeve and hub to be described. substance is placedin the pan (P, and the sleeve The base A, herein shown, has an upright, 11 is then rotated in the direction of the arrow 11, secured to it by a screw, a, (shown in dot- 8, Fig. 2, until an equipoisehas been obtained. ioo ted lines, Fig. 1,) said upright having ayoke- As the sleeve d is rotated in the direction of piece, (4, attached to it by ascrew, a, as shown the arrow 3, the hub 0, the stud y, and pointer in Fig. -11.-. Each arm of the yoke-piece a is y',attachcdtosaid stud, are rotated, tliepointer slotted, as Z), to Form bearings For the knii'e- 1 moving in the direction ol' the arrow 5 in Fig. 2, the movement of the sleeve d being communicated to the hub 6 through the chain It and bar h After each weighing the sleeve d may be rotated and moved in adirection reverse to that indicated by arrow 3, and when so rotated the spring 0 will rotate the hub 0* in the direction opposite to that indicated by arrow 5, the rotation of the sleeve (1 being maintained until the pointer has been restored to zero.

The dial herein shown is graduated to indicate two hundred and forty grains, or one-half ounce; but when it is desired to weigh quantities larger than one -half ounce additional weights may be placed on a pan, m, suspended from the end of the arm (I, as shown in Fig. 1.

The tension of the spring 6 can be regulated by unscrewing from the barrel 6 the screw m, (shown in Fig. 4,) and then rotating the said barrel until the spring has attained the required tension, the screw m being again screwed into the said barrel to maintain the spring at said tension.

When it is desired to weigh rapidly, the beam 1) is quickly brought to rest after each trial balance by means of studs or projections a, secured one at each end to a lever, 11., (see Figs. 1 and 2,) said lever being pivoted to a standard, a, secured to the base A by screw W, said studs being one above and the other below the beam b The lever n has pivoted to it a link, 0, extended through the top of the base A, the end of said link being herein shown as resting upon a flat spring, 0, secured to the under side of the top of said base by screw 0 (Shown in dotted lines, Fig. 1.)

After the article or substance has been placed in the pan cl the operator depresses a lever, 12, provided with a finger-plate, 1), said lever being pivoted to the link 0 and to the standard a, the depression of the lever p turning the lever a on its pivot, and removing the studs 12 from contact with the beam 1)", to permit said beam to turn on its fulcrum. If a balance has not been obtained, the operator lifts his finger from the plate 1), whereupon the spring 0 acts to raise the link 0 to turn the lever 10' on its pivot, to thereby bring the studs a into contact with the beamb, thus bringing said beam to rest. The slots 1) in the yokepie'ee a are closed by covers 12*, herein shown as secured to the outside of said yoke-piece by screws f, and adapted to be turned on said screws as a pivot to uncover said slots, to thereby permit the beam b and block a to be removed for repairs or for the substitution of new parts, when required.

The lower side of the block 0 has secured to it a screw-rod, r, provided with a nut, 0', adapted to be rotated on said rod, to thereby adjust the position of the center of gravity of the balance or scale with relation to the fulshown in Fig. 4. The cut-away portion of the beam I) is longer than the width of the block 0, so that a part of the cut-away portion extends beyond said block, as shown in Fig. 1, to permit the beam to be adjusted longitudinally. Upon the beam 1), at opposite sides of the block 0, are nuts 3 4, by which the position of the beam may be adjusted longitudinally.

The beam I) is hcrein shown as maintained in its adjusted position by means of the screw 5, (see Fig. 4,) which bears against the lower part of said'beam. W hen it is desired to adjust the beam-as, for instance, to lengthen the arm d and shorten thearm on the opposite side of the block cthe screw 5 will be loosened and the nut 4 will be rotated to move it away from the block 0 in the direction of arrow 7, Fig. 1, and then the nut 3 will be turned, so as to move the beam 1) toward the right in Fig. 1, until the required adjustment has been reached.

It is evident the screws 5 might be dispensed with and the nuts 3 and 4 used to adjust the beam.

I claim- 1. In a scale, the beam having one of its arms threaded and provided with a slot, a threaded sleeve mounted on said arm, a dial, a co-0perating pointer,and a support for said pointer, combined with means, substantially as described, independent of the threaded arm and traveling in the slot, to connect said sleeve and support, whereby changes of position of said sleeve with relation to the threaded arm may be indicated on said dial, as and for the purpose set forth.

2. In a scale, the beam having one of its arms threaded and provided with a slot, and a th readed sleeve mounted on said arm, combined with a dial, a co-operating pointer, a support for said scribed, to rotate said hub and move the pointer over the dial in a contrary direction when the sleeve is moved in an opposite direction, substantially as described.

4. The base A, the upright n and the lever n, pivoted to said upright and provided with studs n, located above and below the scalebeam, combined with the scale-beani,and with means, substantially as described, to turn said lever on its pivot to remove said studs from contact with the said beam, and with means, substantially as described, to cause the said studs to engage said beam and bring it to rest, substantially as and for the purpose specified.

5. The base A, the upright t and the lever 12, pivoted to said upright and provided with ICC studs or projections 41-, located above and below the scale-beam, combined with the scalebeam and with the link 0, the lever 12, provided with the finger-plate y), by depressing which said studs are removed from contact with the scale-beam and said beam permitted to oscillate, and with the spring o,aeting on the link 0,to turn the lever a on its pivot, to cause the studs to engage with the scale-beam to bring the same to a state of rest when the pressure is removed from the plate 1), substantially as described.

6. In a scale, the beam provided with the threaded arm (1, having a portion of its circumferenee cut away or made flat, and a block to support the said beam, and through which it is extended,combined with nuts 3 4,to adjust the length of the arms of the said beam, substantially as described.

7. In a scale, the beam having one of its arms threaded and provided with a slot, a

threaded sleeve mounted on said arm, a dial, a eo-operating pointer therefor, and a support for said pointer, combined with means, substantially as described, independent of the threaded sleeve and traveling in the slot, to connect said sleeve and support and rotate the latter, and move the pointer over the dial when the sleeve is moved in one direction, and with means,substantiall y as deseribed,to rotate said support in an opposite direction when the sleeve is moved in a contrary direction, substantially as specified,

In testimony whereof I have signed my name to this specification in the presence oftwo subscribing witnesses.

MOSES G. COOK.

Vitnesses:

B. J. No es, O. M. CONE, 

